CN213180157U

CN213180157U - Spray nozzle

Info

Publication number: CN213180157U
Application number: CN202022396573.4U
Authority: CN
Inventors: 马世勋
Original assignee: Jinan Shizhong Automation Instrument Co ltd
Current assignee: Jinan Shizhong Automation Instrument Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-05-11
Anticipated expiration: 2030-10-26

Abstract

The utility model discloses a nozzle, including surveying the pipe, install the throttling element in the survey pipe, the section of throttling element along the medium flow direction is funnel-shaped, the throttling element front side is provided with positive pressure-taking pipe, the throttling element rear side is provided with negative pressure-taking pipe, and positive pressure-taking pipe and negative pressure-taking pipe are connected with three valves jointly, three valves are connected with differential pressure transmitter; the measuring tube front section is connected with the thermal resistor, the measuring tube rear end is connected with a transmitter pressure tapping pipe, the transmitter pressure tapping pipe is connected with a pressure transmitter, and the differential pressure transmitter, the thermal resistor and the pressure transmitter are connected with a flow totalizer through electric wires. The nozzle is installed in a whole set of temperature, pressure, differential pressure transmitter and integrating instrument, and can better master the change of temperature and pressure, so that the metering precision is more accurate.

Description

Spray nozzle

Technical Field

The utility model relates to a flow detection field especially relates to a nozzle in the pipeline.

Background

In terms of the use of the flowmeter, the orifice plate flowmeter is widely used, but when excessive pressure loss or component abrasion is caused by solids carried in fluid, the orifice plate flowmeter suddenly limits the flow to cause serious turbulence phenomenon of the fluid, and when the traditional flowmeter measures the flow of a pipeline, the temperature and the pressure of a medium in the pipeline are not constant, so that the density of the medium is changed, and the measurement accuracy is influenced.

Disclosure of Invention

To the above problem, the utility model discloses a nozzle, this nozzle adopt the whole installation of temperature, pressure, differential pressure transmitter, integrating instrument, can master temperature pressure's change better to make measurement accuracy more accurate, the installation of flow integrating instrument also makes personnel observe the convenience more of record parameter, has reduced the risk of observing the record at complicated scene such as high altitude.

A nozzle comprises a measuring pipe, wherein a throttling piece is arranged in the measuring pipe, the section of the throttling piece along the medium flowing direction is funnel-shaped, a positive pressure taking pipe is arranged on the front side of the throttling piece, a negative pressure taking pipe is arranged on the rear side of the throttling piece, the positive pressure taking pipe and the negative pressure taking pipe are connected with three valve groups together, and the three valve groups are connected with a differential pressure transmitter; the measuring tube front section is connected with the thermal resistor, the measuring tube rear end is connected with a transmitter pressure tapping pipe, the transmitter pressure tapping pipe is connected with a pressure transmitter, and the differential pressure transmitter, the thermal resistor and the pressure transmitter are connected with a flow totalizer through electric wires.

Preferably, the measuring tube and the throttle element are fixedly connected by a nut pin.

Preferably, a sealing ring is arranged between the differential pressure transmitter and the three valve groups.

Preferably, threaded joints are arranged between the three valve groups and the pressure tapping pipe and between the pressure transmitter and the pressure tapping pipe.

Preferably, a first sealing gasket is arranged between the three valve groups and the threaded joint.

Preferably, a second sealing gasket is arranged between the pressure transmitter and the threaded connector.

Preferably, the measuring tube and the pressure tapping tube are connected by welding.

The utility model has the advantages that:

1. the circular cross-section and funnel-shaped inlet significantly reduces turbulence, which is suitable for high flow rates or fluids with abrasive solid particles, resulting in reduced pressure losses.

2. The measurement precision is high

Due to the characteristics of the nozzle, the change of parameters such as temperature, pressure and the like of a medium in a field pipeline can be clearly realized, so that the measurement precision is more accurate.

3. Low permanent pressure loss

The nozzle has a wide range ratio, is higher in impact resistance and causes lower permanent pressure loss due to the arc transition structure of the throttling piece.

4. The service life is long, the field observation and recording of parameters are more convenient, and the safety of field workers is better ensured.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of the present invention;

FIG. 2 is a perspective view of the present invention;

in the figure: 1. the measuring tube, 2, the temperature sensor, 3, the positive pressure-taking tube, 4, the differential pressure transmitter, 5, the three valve groups, 6, the negative pressure-taking tube, 7, the pressure transmitter, 8, the flow totalizer, 9, the screwed joint, 10, the transmitter pressure-taking tube, 11, the throttling piece, 12 and the nut pin.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present invention, it should be understood that the terms "inside", "outside", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The utility model discloses a nozzle as shown in figure 1, this nozzle is from taking one section survey buret, installs temperature sensor 2, pressure transmitter 7 on surveying the buret, for satisfying the compensation requirement of taking the warm-pressing, differential pressure transmitter 4 and temperature sensor 2, the design of pressure transmitter 7 integration make its measurement more accurate. As shown in fig. 1, the differential pressure transmitter is an EJA differential pressure transmitter 4, the lower part of the transmitter is connected with a three-valve group 5 through a sealing ring, two threaded joints 9 are symmetrically arranged below the three-valve group, and a sealing gasket is arranged between the three-valve group and the threaded joints. Each screwed joint is communicated with a positive pressure taking pipe 3 and a negative pressure taking pipe 6, and the positive pressure taking pipe and the negative pressure taking pipe are communicated with the measuring pipe 1 together. A throttle piece 11 is arranged in the measuring pipe, and the axis of the through hole is parallel to the axis of the measuring pipe. The throttling element is arranged between the positive pressure pipe and the negative pressure pipe and is fixedly connected with the positive pressure pipe and the negative pressure pipe through a nut pin 12. The arc transition structure of the throttling piece in the nozzle reduces the formation of vortex and turbulent flow friction, reduces the loss of kinetic energy, and reduces the pressure loss compared with the traditional throttling device under the same working condition. The axis of the positive pressure taking pipe and the axis of the negative pressure taking pipe are arranged in parallel, and the axis of the positive pressure taking pipe and the axis of the negative pressure taking pipe are both perpendicular to the axis of the measuring pipe. A pressure transducer 7 is also mounted on the measuring tube. The lower part of the pressure transmitter 7 is connected with a threaded joint 9, and a sealing gasket is arranged between the pressure transmitter and the threaded joint. The screwed joint 9 is communicated with a pressure measuring short pipe 10 of a transmitter, and the pressure measuring short pipe 10 of the transmitter is communicated with the measuring pipe 1. The temperature sensor 2 is connected to the measuring tube 1. The differential pressure transmitter 4, the temperature sensor 2 and the pressure transmitter 7 are connected to the flow totalizer 8 through electric wires.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A nozzle is characterized by comprising a measuring pipe, wherein a throttling piece is arranged in the measuring pipe, the section of the throttling piece along the medium flowing direction is funnel-shaped, a positive pressure taking pipe is arranged on the front side of the throttling piece, a negative pressure taking pipe is arranged on the rear side of the throttling piece, the positive pressure taking pipe and the negative pressure taking pipe are jointly connected with three valve groups, and the three valve groups are connected with a differential pressure transmitter; the measuring tube front section is connected with the thermal resistor, the measuring tube rear end is connected with a transmitter pressure tapping pipe, the transmitter pressure tapping pipe is connected with a pressure transmitter, and the differential pressure transmitter, the thermal resistor and the pressure transmitter are connected with a flow totalizer through electric wires.

2. A nozzle according to claim 1, wherein the measuring tube is fixedly connected to the throttle element by means of a nut pin.

3. A nozzle as claimed in claim 1, wherein a sealing ring is provided between the differential pressure transmitter and the three valve block.

4. The nozzle according to claim 1, wherein threaded joints are arranged between the three valve groups and the pressure tapping pipe and between the pressure transmitter and the pressure tapping pipe.

5. A nozzle according to claim 4, wherein a first sealing gasket is provided between the three valve groups and the threaded joint.

6. A nozzle according to claim 4, wherein a second sealing gasket is provided between the pressure transducer and the nipple.

7. A nozzle according to claim 1, wherein the measuring tube is connected to the pressure tapping tube by welding.